A 2-year-old girl was discovered inside a laundry bag at the feet of an unconscious woman in a Harlem subway station last night, police said.

An MTA worker cleaning the station heard a child crying and saw the large black bag wiggling on the stairs leading to the West 125th Street/St. Nicholas Avenue IND station at about 5:45 p.m.

A woman in her 40s was lying by the bag. Police believe the unidentified woman is the little girl’s mother. Both were taken to Harlem Hospital, where the woman was admitted for treatment and the child released to police.

The girl was at the 26th Precinct station house late last night.

Charges against the woman were pending. She may have been using drugs, sources said.